Chisel



(No Model.)

J. D. BAXTER.

Chisel.

No. 230,223. Patented July 20,1880.

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JOHN D. BAXTER, OF MEOHANIOSVILLE, NEW YORK.

CHISEL.

SPECIFICATION forming part of Letters Patent No. 230,223, dated July 20, 1880.

Application filed April 9, 1880. (No model.)

scribed, for as the chisel descends in forming a mortise the chips are forced up the grooves b b, and thus out of the mortise, so that the work can go on continuously without the necessity of removing the chisel in order to take out the chips, thereby saving much of the time and labor that are now expended in making mortises with the ordinary single-edged chisel.

In the chisel herein shown and described the cutting-edge of the transverse diaphragm (l is of service in reducing the size of the chips made, so that they may more readily pass up the grooves b b, and the said diaphragm, in combination with the cutting-edges a a, forms, in eftect, five cutting-edges, as shown.

This grooved and double-edged chisel may have its edges formed, as indicated in dotted lines, Fi 1, at g, with the bevels of the out- To all whom it may concern I Be it known that 1, JOHN D. BAXTER, of Meehanicsville, in the county of Saratoga and State of New York, have invented a new and Improved Chisel, of which the following is a specification.

The object of thisinventioii is to provide a mortising-chisel, that when operating to form a mortise shall clear the same of chips.

The invention consists of a double-edged chisel provided on each side with a groove, which extends from between the pointsupward to the shank of the chisel, said grooves widening as they extend upward.

Figure l is a'perspective view 2 is an end view of the same.

Similar letters of reference indicate corresponding parts.

of a chisel.

In the drawings, A represents the chisel, ting-edges opposite instead of pa allel with providedwith double edges aaand side grooves, each other, so as to avoid the necessity of reb b, which grooves enlarge or grow wider from versing the chisel in forming a mortise.

the bevel of the edges at c to the shank f, as Having thus described my invention, 1

shown, in order to prevent the possibility of choking, and said grooves I) l) are separated by a thin diaphragm, d, which presents a cuttingedge at the point of the chisel, as shown.

in operatin g the sin gle-edge mortisin'g-chisel the chisel has to be frequently withdrawn in claim as new and desire to secure by Letters Patent- I As an improved article of manufacture, a mortising-ehisel constructed substantially as herein shown and described, consisting of a chisel, A, provided with parallel edges 0, a,

order to remove the chips from the mortise, longitudinal grooves I) I), and diaphragm cl, which operation occupies about as much time connecting the edges a a. at their center, as set as it does to cut the mortise, forth.

and in using an ordinary mortising-macliine chisel the necessity of frequently removing the chisel in order to free the mortise of chips involves considerable labor. These objections are avoided by the use of the chisel herein shown and de- JOHN l). BAXTElt.

Witnesses JOHN RICE, CHARLES WHEELER. 

